RU2307903C1 - Method for laminated building article production - Google Patents

Abstract

FIELD: construction, particularly to product reinforced concrete articles, for instance floor slabs or framing structure panels for industrial and civil buildings, preferably for high-story ones.

SUBSTANCE: method for article production by serial layer pouring in retained form involves pouring the first fine concrete layer; leveling the mix in horizontal plane to provide the first layer surface flushing with the first bead of retained form; laying the first layer longitudinal reinforcement bars on the first bead; pouring heat-insulation layer of light-weight concrete in plane parallel to that of the first layer; leveling heat-insulation layer in horizontal plane so that heat-insulation layer surface is flush with the second retained form bead; laying the second layer longitudinal reinforcement bars on the second bead; pouring the second fine concrete layer on heat-insulation layer; leveling the mix in horizontal plane so that it is flush with retained form edge; performing simultaneous vibroforming of all layers and leaving the layers as they are for mix setting. During mix pouring retained form is put in rigid surface casing. To provide total concrete body air-tightness after mix leveling in horizontal plane and to provide mix flushing with upper retained form edge terminal retained form layer is laid in retained form. Form joints are sealed, for instance by welding, adhering, edge turning or any another well-known method.

EFFECT: improved heat-insulation properties, increased article service life and reliability.

2 cl, 6 dwg

Description

The invention relates to construction, in particular, it can be used in the manufacture of building reinforced concrete products such as floor panels or panels of building envelopes for industrial, civil and primarily high-rise construction.

Known technical solution according to patent No. 2040653 "Multilayer panel and method of its manufacture", cl. Е04С 2/26, dated 12.01.1993 (the closest analogue). The technical solution according to patent No. 2040653 allows to obtain a multilayer coating panel with a heat-insulating layer of variable density in thickness with a highly porous middle part and a waterproof crack-resistant surface. In accordance with the method known in patent No. 2040653, a reinforced concrete slab is laid on the bottom of the mold, a concrete mixture capable of pore formation is laid, pore formation is carried out, it is held until the mixture has set, and the product is stripped off, after which the top layer of the fiberglass is laid with application and impregnation of bitumen emulsion mastic.

The disadvantage of the method according to patent No. 2040653 is the presence of work on the installation and dismantling of special formwork, as well as the presence of the procedures of the method aimed at hardening and sealing the upper moisture protective layer, which significantly increases the complexity of the manufacturing of the product. In addition, the method according to patent No. 2040653 does not provide, without special devices, the accuracy of the relative positioning of the product layers, which negatively affects the quality of the manufactured products.

The features of the method according to patent No. 2040653, coinciding with the features of the claimed invention, - laying concrete mixture, including capable of pore formation, pore formation, aging until setting mixture, laying the upper layer of fiberglass.

The problem to which the invention is directed is improving the quality of heat-shielding properties, increasing the durability and reliability of a product, as well as improving its consumer qualities by improving heat-shielding.

The problem is achieved due to the fact that in the proposed method of manufacturing a multilayer building product containing operations of alternately laying layers into the formwork, after laying the first layer of fine-grained concrete into the formwork, the mixture is leveled in a horizontal plane flush with the first formwork flange, and longitudinal reinforcement is laid on the first flange the first layer and lay the insulating layer of light concrete, located in a parallel plane with respect to the first layer, level the mixture in a horizontal plane flush with the second rib permanent formwork, longitudinal reinforcement is laid on the second layer of the second bead is deposited a second layer of fine-grained concrete mixture is spread in a horizontal plane flush with the cut formwork produce simultaneous vibromolding all layers to withstand setting blend.

In order to ensure that the fixed formwork of the product does not lose shape during the concreting of layers, in the technological process it is installed in a rigid conductor, which on all sides keeps the material of the fixed formwork from deflection and other deformations.

For complete sealing of the entire concrete body of a multilayer building product after leveling the mixture in a horizontal plane, flush with the formwork cut, a closing layer of fixed formwork is laid and then all layers are vibro-formed, kept until the mixture sets.

Seams of fixed formwork are sealed, for example, by welding, gluing, rolling, or by any known suitable method.

In the technological process of manufacturing a multilayer building product, the function of fixed formwork can be performed by a steel sheet bent along the section profile, the ends can be closed with the same sheet material cut along the contour of the product cross section profile and rolled or welded along the edge of the mating ribs of the longitudinal and transverse edges of the formwork. Such material is widely known in Russia, for example, in Lipetsk, the metallurgical plant (JSC NLMK) is offered in the form of rolled metal - galvanized steel in rolls and sheets (0.5-0.79 mm thick) with a paint and varnish coating. It is this thickness of 0.5-0.79 mm that is optimal for use as a coating for a multilayer building product and at the manufacturing stage can be used as a fixed formwork with a removable rigid conductor.

According to another option - fixed formwork, which functions as the upper edge of the waterproof layer of the sealed building product, as well as the side edges and ends of the formwork glued to the upper edge or cast at the same time, can be made of technical organic glass GOST 17622-72 (acrylic, " honeycomb ", extrusion, injection plexiglass), modified sheets based on PMMA (polymethylmethacrylate), with increased impact strength (up to 100 kJ / sq.m). Transparent “anti-vandal” material resistant to fire (B1 to DIN 4102), is used for architectural glazing with high fire safety requirements. The brand of acrylic materials - Akrylon (Acrylon) is produced at Povazhsky chemical plants (Slovakia). Its cost in Russia is lower than that of other imported analogues. A significant advantage of Acrylon is its high resistance to external atmospheric influences: low water absorption, frost resistance up to minus 40-45 ° С, resistance to ultraviolet radiation. The manufacturer guarantees a 10-year period of use of Acrylon sheets without changing their optical, physical, mechanical and operational characteristics.

Thus, the technical effect is achieved by the fact that each layer of concrete mixture is located exactly in the plane parallel to the plane of the slab and has the exact thickness of the layer, therefore, the proposed invention allows the creation of multilayer building products, for example building panels, with improved thermal insulation properties while ensuring its increased reliability in strength and gas and moisture impermeability required to create walling and ceilings of high-rise buildings and buildings of increased and different high floors without the use of additional structural elements.

Figure 1, Figure 2, Figure 3, Figure 4 and Figure 5 schematically depicts the main stages of a method of manufacturing a multilayer building product and Figure 6 schematically shows the design of the proposed multilayer building product in cross section:

- figure 1 - laying in fixed formwork (1) in the direction of the concrete mixture of the first layer (2) of fine concrete, level the mixture in a horizontal plane flush with the first flange (A) of the fixed formwork (1), made of steel, preferably galvanized, profile sheet, curved along the profile of the cross section of the product, or from a sheet of technical organic glass, for example, Acrylon, cast or extruded in form of a part of the perimeter of the cross section of the product;

- figure 2 - laying on the first flange (A) of the transverse bars of the reinforcement (7), which are laid and secured by wire twisting rods of longitudinal reinforcement (3) of the first layer;

- figure 3 - laying of the insulating layer (4) of porous concrete located in a parallel plane with respect to the first layer (2), level the mixture in a horizontal plane flush with the second flange (B) of the fixed formwork (1);

- figure 4 - laying of transverse rods of reinforcement (8), on which are laid and secured by wire twisting rods of longitudinal reinforcement (5) for the second layer of fine concrete on the second flange (B);

- figure 5 - laying the second layer (6) of fine concrete in the direction of the arrow and leveling the mixture in the horizontal plane flush with the slice of the formwork (C), then laying the closing layer (1a) of the fixed formwork and the simultaneous vibration of all layers;

- Fig.6 - inverted to its normal position, the product as a floor panel after holding the product until the mixture is set.

Claims (2)

1. A method of manufacturing a multilayer building product, containing the operation of alternately laying layers in the formwork, characterized in that after laying in the fixed formwork of the first layer of fine concrete, the mixture is leveled in a horizontal plane flush with the first flange of the fixed formwork, the longitudinal reinforcement of the first layer is laid on the first flange and lay a light concrete insulating layer located in a parallel plane with respect to the first layer, level the mixture horizontally the second plane flush with the second flange of the fixed formwork, lay the longitudinal reinforcement of the second layer on the second flange, lay the second layer of fine-grained concrete, level the mixture in the horizontal plane flush with the cut of the fixed formwork, simultaneously vibrate all the layers, withstand until the mixture sets, while the time of concreting layers of fixed formwork is enclosed in a rigid conductor. 2. The manufacturing method according to claim 1 of a multilayer building product, characterized in that for complete sealing of the entire concrete body of the multilayer building product after leveling the mixture in a horizontal plane flush with the slice of the fixed formwork, the closing layer of the fixed formwork is laid and then all layers are vibroformed, stand until the mixture is set, and the seams of the fixed formwork are sealed, for example, by welding, gluing, rolling or by any known suitable method.

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